Source code for Exscript.util.collections

from __future__ import unicode_literals, absolute_import
from future import standard_library
from builtins import str
from builtins import chr
from builtins import range
from builtins import object
import copy
from collections import OrderedDict, Callable, defaultdict

[docs]class OrderedDefaultDict(OrderedDict): """ A fusion of Python's defaultdict and Python's OrderedDict. """
[docs] def __init__(self, default_factory=None, *a, **kw): if (default_factory is not None and not isinstance(default_factory, Callable)): raise TypeError('first argument must be callable') OrderedDict.__init__(self, *a, **kw) self.default_factory = default_factory
def __getitem__(self, key): try: return OrderedDict.__getitem__(self, key) except KeyError: return self.__missing__(key) def __missing__(self, key): if self.default_factory is None: raise KeyError(key) self[key] = value = self.default_factory() return value def __reduce__(self): if self.default_factory is None: args = tuple() else: args = self.default_factory, return type(self), args, None, None, self.items()
[docs] def copy(self): return self.__copy__()
def __copy__(self): return type(self)(self.default_factory, self) def __deepcopy__(self, memo): return type(self)(self.default_factory, copy.deepcopy(self.items())) def __repr__(self): return 'OrderedDefaultDict(%s, %s)' % (self.default_factory, OrderedDict.__repr__(self))